Street-sweeper



(No Model.) 3 sheetsgsheen 1. H. 'BROOMELL STREET SWBEPER Patented Nov. 19, 1895.

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UNTTED STATES PATENT OFFICE.

HENRY BROOMELL, OF PHILADELPHIA, ASSIGNOR OF ONE-HALF TO E. G. BROOMELL, OF CHRISTIANA, PENNSYLVANIA- STREET-SWEEPER.

SPECIFICATION forming part of Letters Patent No. 550,014, dated November 19, 1895.

Application iled February 6, 1895. VSerial No.'537,465. (No model.)

To all whom t may cori/cern:

Be it known that I, HENRY BROOMELL, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Pick-Up Street-Sweepers, of which the following is a specification. A

The invention relates to street-sweeping machines of the pick-up7 class. The object is to produce such a machine, which shall possess advantages in'point of simplicity, convenience in handling, durability, and general efliciency.

With this obj ect in View the invention consists in an improved construction and certain novel combinations and arrangements of parts, which will be hereinafter described and claimed.

In the accompanying drawings, forming partrof this specication, similar letters of reference indicate corresponding parts in the several views. Y

Figure l is a view in perspective of one embodiment of the invention applied.. Figs. 2 and 3 are a plan and a side view thereof, respectively, parts in each of these figures being broken away. Fig. 4 is a sectional view in detail ofthe catch-trough, the action of the apron being indicated by dot-ted lines; and Fig. 5 is a similar view of the brush-shaft hanger.

A represents the platform of the machine, which is suitably supported above the axles of front and rear wheels a a2. Partially inclosing the rear portion of4 the platform is a guard-rail a3, which extends across the end and forward along each side to a point about midway of the length thereof. This inclosure is designed for the storage of bagged sweepings. At the forward end of the platform a drivers seat a4 is arranged to be within convenient reach of levers controlling the main parts of the machine.

B represents the rear brush, which isrotatably mounted in bearings b of arms b2, the latter being pivoted upon the bearings of a screw-conveyer shaft, to be hereinafter described. This brush is driven from one of the rear wheels of the machine through the gear b3, which is secured to rotate with one wheel, and meshing with this gear isa pinion b4, carried by a shaft b5, which also carries at its'opposite end a sprocket-wheel h6, over which passes a drive-chain 67 from a sprocketwheel b8 upon the brush-spindle b9. The vertical adjustment of this brush is controlled by a lever bw, movable over a segment adjacent to the drivers seat through connectingchains b, which are suitably supported, as by brackets Z912, and attached to the brushcarrying arms. Power to the brush is controlled by a shifting-lever Z713, pivoted in a bracket Z914 and having its lower forked extremity lying in engagement with a grooved collar of the pinion b4 upon the end of the shaft b5, the pinion being movable lengthwise 'of the same. Y

' O represents the pick-up and conveying mechanism comprising a catch-trough c, depending from and secured by pendant c to the platform, slightly in advance of the rear brush and provided with an apron c2, which is formed in sections, each pivoted to the rear open side of the trough to have independent movement-that is, to yield vertically upon striking an obstruction. Each of these sections of the apron c2 has secured to it a bracket or stop c1", adapted to engage the trough c, and thus hold the apronsections normally just out of contact with the ground when the machine is moving over a level'surface. Vlorking in this trough are right and left hand conveyer-screws c5, which are carried by the shaft b5 above referred to. This conveyer is so arranged as to feed the sweepings caught in the trough toward the center, where they are taken up by scrapers or buckets attached to an elevator-chain c4, running over sprockets c5 c6, the latter being adapted to revolve with the shaft and so impart motion to the elevator. This elevator works in a trunk or casing c7, which is secured by a standard or support c to the platform A and is provided at or near its upper end with a chute o8, through which the sweepings are discharged into a bag or other receptacle placed beneath the open endthereof, adamper-valve c9 being employed for convenience in operating. f

VD represents side brushes, each of which comprises a shaft d, rotatably mounted in IOO bearings(Z- of a hanger (Z3, which latter swings and is supported from the bearings of a horizontally-disposed shaft (Z4, mounted to rotate loosely in bearings (Z5, formed on the forward end of the horizontal frame (ZG. This frame (ZG terminates at its rear end in sleeves (ZT,- through which loosely passes a shaft (ZS, supported by the frame of the machine, the forward end of said frame d, in connection with the brush, hanger, and buckets, being suspended by a chain hereinafter described. The shaft (ZS carries a pinion (ZO, gearing with and driven by a gear-wheel d" on one of the rear carrying* wheels (t2. Power is transmitted from the drive-shaft (Zs te the shafts (Z4, carried by the frames d, through sprocketwheels (Z11 and chains (Z12 and from the lastmentioned shafts to the shafts (Z of the brushes by bevel-gears (Z13. Secured upon each of the brush-shafts below the hanger-bearing is a :flanged collar (ZH, from which a series of integral radially disposed lugs CZ15 project. These lugs are'arranged in pairs and apertured to receive pins (Zw, upon which the brush-carrying arms (Z17 are pivotally mounted. At the outer end upon opposite sides of these arms bunches of splints (11S are secured by clips (119, which are bolted thereto. The inner ends of the arms (Z1T extend beyond the pivot to a point beneath the flange of the collar, which thereby serves as a stop in limiting the downward movement of the brusharms. The brush-shaft (Z being held in a position inclined from the perpendicular, and the inner ends of the brush-arms (117 being in contact with the ange of the collar d, the brushes will be lifted from the ground on the rear or return side. In pivoting the arms (Z17 a greater arc of contact of the brushes with the ground is secured without unnecessary strain upon the splints. If the weight of the arms (ZU, with their attached brushes, is not suicient to cause the latter to impinge on the ground with suiiicient force for clean sweeping, a series of coiled or helical springs e e, as shown in Fig. 5, is used, the springs being connected to downwardly-extending projections e of the arms d and to a downward extension e2 of the brush-shaft.

To adjust the brush-shaft and retain it at proper inclination, an arm (Zgois pivotally attached to the hanger ('Z3 and extended upward and adjustably secured to the brush-shaftsupporting frame (ZG, and serves, further, to rigidly connect the frame, hanger, and brushshaft and thereby causes them to move together when raised or lowered. These brushes are elevated or swung clear of the ground by chains dm, the one thereof being attached to the brush-shaft hanger and the opposite end tothe angular extremity of a controlling-lever (Z22, which works over a segment adjacent to the drivers seat.

To render the machine more compact when the brushes are not in use, mechanism is pro vided for adjusting the side brushes laterally, and consists in forming a rack-bar (Zgiutcgral with each of the sleeves (Z7 of the frames (ZG, which support the brush-shaft hangers, and rotatably mounting in the rea-r of the racks vertically disposed shafts carrying intermeshing pinions (Z2l and sprocket-wheels (W. Endless chains (Z2G from these sprockets extend forward and pass around sprocketwheels upon the lower end of hand-wheel. shafts (ZQT, which latter are normally held against rotation by means of springaetuated locking devices (ZLH, designed to be thrown out of engagement by means of footpieces d2. To enable the driver to readily determine the distance to run the machine from the curb without the necessity of leaving his seat, gages are provided, and consist, respectively, in a slotted bar (Zim, which is adjustably held by a bolt, so as to project outward from the side of the platform at the forward end of the machine, the bars being adjusted so that the depending rods (Z31 at its outer ends indicate the width of the surface swept by the side brushes and thus serve as a guide for the driver in keeping the machine at a proper distance from the curb. For convenience in operating, the drivin g-shaft (Z8 of the side brushes is connected with the j iinion-adjusting lever bw of the conveyer-shaft, so as to be simultaneously thrown in and out of gear.

In use the rear and side brushes are lowered by means of the controlling-levers above described, and after the side -brush supporting frames have been adjusted and se cured so that the brush-shafts stand at the proper angle to insure clean sweeping, the gages are set and the brushes then thrown in gear. As the machine is drawn forward the sweepin gs from the rear brush, guided by the apron, will be caught in the trough and fed to the elevator by the screw-conveyer, then carried upward and discharged into abag or other receptacle placed beneath the discharge end of the chute. Ey means of the side brushes the street will be swept to the curb, all gutter-sweepin gs, owing to the inclination of the brush-shafts and the brushes, being thrown under the machine in advance of the rear brush, where they are caught and thrown into the trough. As the bag or other receptacle IOO becomes filled, the damper-valve in the chute is closed and another bag is placed in position.

Having thus fully described my invention, what I claim is- 1. In a street sweeper, the combination. of a brush-shaft, a collar provided with lugs attached thereto, arms pivoted intermediate their length to said lugs, the inner ends of the arms being limited as to upward movement by striking said collar and springs connecting pendent projections to said inner ends and the lower end of the brush shaft, substantially as set forth.

2. In a street sweeper, the combination. of a side brush, a shaftearryin g saidbrusl i, a swinging hanger having bearings for said shaft, a horizontal shaft whose bearings support the aforesaid hanger, an arm having bearings Within which said horizontal shaft is mounted to revolve loosely and terminating in a sleeve, said horizontal shaft being geared to the brush-shaft, a drive shaft geared to one of the carrying Wheels and bearing in said sleeve, and a drive-chaincompassing sprocket-Wheels on said horizontal shaft and said drive shaft and means for shifting said brush in and out of operation, substantially as set forth.

3. In a street sweeper, the combination of a side-brush, a shaft hanger, an arm supporting said shaft hanger and having a sleeve provided With a rack, a shaft upon Which said sleeve is adapted to slide laterally and through Which said side brush is operated, by a suit- 15 In testimony whereof I have hereunto af- 'fixed my signature in the presence of tWo sul scribing Witnesses.

HENRY BROOMELL. Witnesses:

W. H. PUMPHREY, F. M. JOHNSON. 

